KR200175306Y1 - Manhole cover - Google Patents

Abstract

The present invention relates to a manhole cover, which is capable of forming colored letters (symbol marks, etc.) of the jurisdiction area indicating the character of manhole usage or the jurisdiction area managed by the manhole on the lids of various manholes. In forming the use-marks, area-mark figures, and uneven patterns on the surface of the embossed or intaglio, respectively, filling the colored thermosetting resin in powder with the use-marks and area-marks engraved on the surface of the manhole cover. After the heat is applied to the colored thermosetting resin by heat is designed to display the area display figure and the use display characters displayed on the manhole cover for a long time clearly.

Description

Manhole cover {Manhole cover}

The present invention relates to a manhole cover capable of forming a color (symbol mark, etc.) of a jurisdiction area displaying a character indicating a manhole use on a cover of various manholes or a jurisdiction area managing a manhole.

In general, manhole covers of various manholes, such as manholes for water and sewage, manholes for telecommunications and cables, or manholes for sewage pipes, are buried to be displayed on the road surface. In order to prevent the wheels from slipping, the use marking character is placed on the surface of the manhole cover to distinguish whether it is used for manhole, that is, for water supply or sewerage, or for communication cable or electric cable and sewage management manhole. It is embossed or engraved. On the surface of the manhole cover, a figure (such as a symbol mark) representing a jurisdiction for managing the manhole, for example, a province or a city, is engraved and displayed.

In the prior art, when manufacturing the manhole cover of the manhole, the surface of the manhole cover is simply embossed or engraved with a use-mark indicating the use of the manhole and an area display diagram indicating the jurisdiction in which it is responsible for management. It is pointed out that the use-marks and area-marked figures imprinted with embossed or engraved are not formed clearly because they are formed of the same material as the manhole.

Therefore, in order to solve the above problems, a method of applying a colored paint (mainly yellow paint) to the use-marking character and the area-marking figure imprinted on the manhole cover has been proposed and implemented. In the case of embossing, the colored paint is applied only to the embossed part, and it is easily erased.In the case of intaglio engraving, the colored paint is filled with thick and can last longer than the embossed, but the colored paint itself Because of its weak strength, it is pointed out that it gradually disappears due to contact with wheels, soil, sand, etc. of vehicles traveling on the road.

The present invention has been devised to solve all the problems appearing in the prior art as described above, and then engraved the use-marks and area display graphics, etc. displayed on the surface of the manhole cover intaglio and then intaglio display characters and intaglio display graphics As a means of filling and thermosetting colored thermosetting resins having excellent strength, the purpose of designing and displaying the use marks and local display figures displayed on the manholes is to maintain the color clearly.

The present invention as a means for achieving the above object,

In embossing or engraving the use-mark characters, the area-mark figures, and the uneven patterns on the surface of the manhole cover

It is characterized in that the colored heat-curable resin filled with powder to the use-mark and local display characters engraved intaglio engraved on the surface of the manhole cover to heat-harden the colored thermosetting resin,

In addition, the concave-convex portion is formed on the inner surface of each of the use-indicative characters and the region-displayed shapes, thereby improving the adhesive strength of the thermosetting colored thermosetting resin.

1 to 4 are plan views showing various embodiments of the present invention.

5 is a colored thermosetting resin in the engraved use markings on the manhole cover of the present invention

Figure shows an embodiment after filling and thermosetting.

6 is a cross-sectional view taken along the line A-A of FIG.

Figure 7 is a partial cross-sectional view of the display character of another embodiment of the present invention.

※ Explanation of code for main part of drawing

1: Manhole cover 2: Area display diagram

3: Indication character 4: Uneven pattern

5: colored thermosetting resin 6: uneven portion

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 is a plan view showing a number of embodiments of the present invention, Figure 5 is a view showing an embodiment of the thermosetting by filling the colored thermosetting resin and then heat applied to the engraved use-mark on the manhole cover of the present invention 6 is a cross-sectional view taken along the line AA of Figure 5, Figure 7 is a view showing a cross-sectional view of a part of the display letter of the use of another embodiment of the present invention,

Reference numeral 1 denotes a manhole cover, and the surface of the manhole cover 1 is engraved with an area display figure 2 at the center portion and a use display character 3 at one side when the surface of the manhole cover 1 is made of metal. In addition, the concave-and-convex pattern 4, which is embossed and embossed, is formed at portions except for the region display figure 2 and the use display character 3.

The colored thermosetting resin (5) filled with powder is filled in each of the area display graphic (2) and the use display character (3) engraved intaglio on the surface of the manhole cover (1) manufactured as described above. When heat is applied to the resin (5), the colored thermosetting resin (5) filled in each of the area display letter (2) and the use display letter (3) is thermoset while melting in a liquid phase.

As described above, the thermosetting colored thermosetting resin (5) is embedded in the intaglio portion of the area display graphic (2) and the use indication character (3), and thus has excellent adhesive strength, and further, the thermosetting colored thermosetting resin (5). ) Remain colored until the area marker (2) and use marker (3) are completely worn out to the bottom of each intaglio. It shows the characteristic to make.

In addition, when the colored thermosetting resin (5) is filled and thermally cured in the state where the uneven portion 6 is formed on the inner surface of each of the area display graphic (2) and the use display character (3), the colored thermosetting resin ( The adhesion strength of 5) becomes stronger.

Referring to the operation of the present invention configured as described above are as follows.

The colored thermosetting resin (5) is filled in the engraved portion of each of the area display graphic (2) and the use display character (3), and then heat-cured while melting when heated, so as to remind the colored thermosetting resin (5). It is easy to install to be embedded in each of the area display graphic (2) and the use display characters (3), the heat-cured colored thermosetting resin (5) is the area display graphic (2) and the use display Since it is embedded in the intaglio portion of the letter (3), the adhesive strength is excellent, and the colored thermosetting resin (6) is formed by the uneven portion (6) formed on the inner surface of the intaglio portion of each of the area display shape (2) and the use display shape (3). 5) the adhesive strength of the state becomes more strong, the colored thermosetting resin (5) thermally cured by the vehicle passing over the manhole cover (1) is relaxed in the area display figure (2) and the use display character (3) Cases never occur, and the colored thermos Resin (5) itself is wear resistant material and will be again the state, so the developing worn by the wheels of a vehicle passing through the manhole cover (1) above, embedded in the sub-area display shapes and uses marker each engraved prevented.

Since the colored thermosetting resin (5) is colored by a method of mixing a pigment with a thermosetting resin made of powder, it is easy to manufacture the above-mentioned regional display diagram (2) and the usage indicator (3) in a desired color. In addition, the colored thermosetting resin (5) is filled in the state display figure (2) and the use display character (3) in the state of powder in the manhole cover (1) itself into the heating furnace to heat the entire manhole cover It hardens | cures or heat-cures only the area | region display shape (2) and the use display shape shape (3) part.

According to the present invention as described above, and the topographical diagram showing the jurisdiction to manage the manhole on the surface of each manhole cover covering the manhole for various uses such as manhole for water and sewage, manhole for communication and wire cable or manhole for sewage management Usage indicators indicating the purpose of the manholes The colored thermosetting resin is formed in the engraved part of each indentation so that the colored thermosetting resin does not easily wear out even if the vehicle passes over the manhole cover. It is a practical design that has the effect of displaying the display figure and the display character clearly.

Claims (2)

In embossing or engraving the use-mark characters, the area-mark figures, and the uneven patterns on the surface of the manhole cover A manhole cover, characterized in that the colored heat-curable resin filled with powder in the use-mark and local display characters engraved intaglio on the surface of the manhole cover, and then heat the colored thermosetting resin. The method of claim 1, Manhole cover, characterized in that to form an uneven portion on the inner surface of each of the use display character and area display type to enhance the adhesive strength of the thermosetting colored thermosetting resin.